Selection of 3 points from given 14 pts can be made in 14C3=364 ways. But selection of 3 points from the points on one line cannot give any triangle. Such selections are 3C3+5C3+6C3 = 1 + 10 + 20 = 31..... (2) Hence total number of triangles that can be formed = 364 – 31 = 333.